Hi teseo tesei, I downloaded your save, don't touch nothing (as you can see in image) and run the turn:
ACT 1:
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Morning Air attack on TF, near Midway Island at 157,91
Weather in hex: Light rain
Raid spotted at 20 NM, estimated altitude 9,000 feet.
Estimated time to target is 7 minutes
Japanese aircraft
A6M2 Zero x 8
Allied aircraft
F2A-3 Buffalo x 3
SBD-3 Dauntless x 2
No Japanese losses
Allied aircraft losses
F2A-3 Buffalo: 1 destroyed
SBD-3 Dauntless: 1 destroyed
CAP engaged:
Hiryu-1 with A6M2 Zero (2 airborne, 0 on standby, 0 scrambling)
(6 plane(s) diverted to support CAP in hex.)
2 plane(s) intercepting now.
0 plane(s) not yet engaged, 6 being recalled, 0 out of immediate contact.
Group patrol altitude is 11000
Time for all group planes to reach interception is 2 minutes
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ACT 2:
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Morning Air attack on TF, near Midway Island at 157,91
Weather in hex: Light rain
Raid detected at 30 NM, estimated altitude 13,000 feet.
Estimated time to target is 11 minutes
Japanese aircraft
A6M2 Zero x 5
Allied aircraft
F4F-3 Wildcat x 1
SBD-3 Dauntless x 30
TBD-1 Devastator x 12
No Japanese losses
Allied aircraft losses
F4F-3 Wildcat: 1 destroyed
SBD-3 Dauntless: 2 destroyed, 2 damaged
TBD-1 Devastator: 1 destroyed, 4 damaged
Japanese Ships
CV Hiryu, Bomb hits 2, on fire
Aircraft Attacking:
10 x SBD-3 Dauntless releasing from 2000'
Naval Attack: 1 x 1000 lb SAP Bomb
12 x SBD-3 Dauntless releasing from 3000'
Naval Attack: 1 x 1000 lb SAP Bomb
9 x TBD-1 Devastator launching torpedoes at 200 feet
Naval Attack: 1 x 22in Mk 13 Torpedo
4 x SBD-3 Dauntless releasing from 4000'
Naval Attack: 1 x 1000 lb SAP Bomb
CAP engaged:
Hiryu-1 with A6M2 Zero (0 airborne, 0 on standby, 0 scrambling)
3 plane(s) not yet engaged, 2 being recalled, 0 out of immediate contact.
Group patrol altitude is 11000 , scrambling fighters to 8000.
Time for all group planes to reach interception is 12 minutes
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ACT 3:
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Morning Air attack on TF, near Midway Island at 160,92
Weather in hex: Moderate rain
Raid spotted at 44 NM, estimated altitude 15,000 feet.
Estimated time to target is 16 minutes
Japanese aircraft
A6M2 Zero x 4
D3A1 Val x 6
Allied aircraft
F4F-3 Wildcat x 12
Japanese aircraft losses
A6M2 Zero: 1 destroyed
D3A1 Val: 4 damaged
Allied aircraft losses
F4F-3 Wildcat: 1 destroyed
Allied Ships
CV Yorktown, Bomb hits 2, on fire
Aircraft Attacking:
2 x D3A1 Val releasing from 3000'
Naval Attack: 1 x 250 kg SAP Bomb
4 x D3A1 Val releasing from 2000'
Naval Attack: 1 x 250 kg SAP Bomb
CAP engaged:
VF-42 with F4F-3 Wildcat (5 airborne, 7 on standby, 0 scrambling)
5 plane(s) intercepting now.
Group patrol altitude is 10000 , scrambling fighters to 10000.
Time for all group planes to reach interception is 6 minutes
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ACT 4:
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Afternoon Air attack on TF, near Midway Island at 160,92
Weather in hex: Clear sky
Raid detected at 23 NM, estimated altitude 14,000 feet.
Estimated time to target is 8 minutes
Japanese aircraft
A6M2 Zero x 3
D3A1 Val x 5
Allied aircraft
F4F-3 Wildcat x 6
Japanese aircraft losses
D3A1 Val: 5 damaged
D3A1 Val: 1 destroyed by flak
No Allied losses
Allied Ships
CL Helena, Bomb hits 1
CV Yorktown, Bomb hits 2, on fire
Aircraft Attacking:
5 x D3A1 Val releasing from 1000'
Naval Attack: 1 x 250 kg SAP Bomb
CAP engaged:
VF-42 with F4F-3 Wildcat (2 airborne, 4 on standby, 0 scrambling)
2 plane(s) intercepting now.
Group patrol altitude is 10000 , scrambling fighters to 12000.
Time for all group planes to reach interception is 9 minutes
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ACT 5:
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Afternoon Air attack on TF, near Midway Island at 157,91
Weather in hex: Clear sky
Raid detected at 20 NM, estimated altitude 13,000 feet.
Estimated time to target is 7 minutes
Japanese aircraft
A6M2 Zero x 6
Allied aircraft
F4F-3 Wildcat x 1
SBD-3 Dauntless x 26
TBD-1 Devastator x 6
No Japanese losses
Allied aircraft losses
F4F-3 Wildcat: 1 destroyed
SBD-3 Dauntless: 1 destroyed, 7 damaged
Japanese Ships
CV Hiryu, Bomb hits 4, heavy fires, heavy damage
DD Tanikaze, Bomb hits 1, on fire
DD Kasumi
DD Arare
Aircraft Attacking:
6 x SBD-3 Dauntless releasing from 2000'
Naval Attack: 1 x 1000 lb GP Bomb
5 x SBD-3 Dauntless releasing from 4000'
Naval Attack: 1 x 1000 lb SAP Bomb
6 x TBD-1 Devastator launching torpedoes at 200 feet
Naval Attack: 1 x 22in Mk 13 Torpedo
4 x SBD-3 Dauntless releasing from 4000'
Naval Attack: 1 x 1000 lb GP Bomb
2 x SBD-3 Dauntless releasing from 2000'
Naval Attack: 1 x 1000 lb SAP Bomb
4 x SBD-3 Dauntless releasing from 3000'
Naval Attack: 1 x 1000 lb GP Bomb
4 x SBD-3 Dauntless releasing from 3000'
Naval Attack: 1 x 1000 lb SAP Bomb
CAP engaged:
Hiryu-1 with A6M2 Zero (0 airborne, 4 on standby, 0 scrambling)
4 plane(s) intercepting now.
0 plane(s) not yet engaged, 2 being recalled, 0 out of immediate contact.
Group patrol altitude is 11000 , scrambling fighters to 11000.
Raid is overhead
Heavy smoke from fires obscuring CV Hiryu
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As you can see, nothing is wrong, your Yorktown planes fly and drop their bomb.
Maybe in your turn there were heavy cloud or thunderstorm or...really, I don't know, all is ok.